Flat computer monitor



FIG. 1 is a top, front perspective view of a flat computer monitor showing my new design;

FIG. 2 is a top, rear perspective view of the flat computer monitor of FIG. 1, showing my new design; and,

FIG. 3 is a right side elevation view of the flat computer monitor of FIG. 1, showing my new design, the left side elevational view being a mirror image thereof. 

I claim the ornamental design for a flat computer monitor, as shown and described. 